Fire extinguisher



Aug. 19, 1952 H. J. SCHNORR FIRE EXTINGUISHER Filed May 22, 1950 7INVENTOR. WW

I A'z'TaENEY Patented Aug. 19, 1952 2,607,429 FIRE EXTINGUl'SHER HarryJ..Sehnorr, Philadelphia, Pa. Application Mama, 1950, Serial No.163,4.ilS-

2 Claims. (01. '16926) My invention relates to new and useful fireextinguishers of the type comprising a frame sup-' porting a fragilecontainer for a fire extinguishing fluid and a spring actuated strikerto be projected in a straight line to break the container and therebyrelease the contents which will be showered on any adjacent burningsubstance,

the striker normally being held in a retracted position by a fusiblelink. i I

An object of the presentinvention is to produce a compact andvrelatively inexpensive apparatus to be automatically actuated due toexcessive heat in the, vicinity thereof.

Another object of this invention to produce a frame carrying the strikerand supporting a 'frangible container, such as a glass bottle of novel,construction, that may be manually removed from theframe and thrown intoa fire after the mannerof a bomb. or the nipple portion broken and saidcontainer utilized similar to a nozzle to sprinkle or spray thecontents. on a burning area.

Another objectof the present invention is the provision of apparatus of.the type mentionedwhich will be-of strong, durable construction, ex-

cept for the container, and composed of a"minimum of parts functioningefficiently under all conditions so that the device is not likely to getout of order, consequently requiring little or no attention or expensefrom the standpoint of maintenance.

Another object of the invention' isto produce an exceedingly simple andeificient frame comprised of an upright or back plate,- a bottlesupporting hoop secured to the upper part of said plate, a, guide fixedto the lower part of said plate and-including a pair of parallel armsbetween which is mounted a post to support a spring and thestriker.

' A-further object of the invention is to produce a striker to beprojected forwardly in a straight line, which striker includes a pointedhead to positively break the neck of the frangible container whenimpelled by the spring, said striker being held in a retracted positionby a fusible link.

A still further object of the invention is to produce a novel frangiblecontainer of glass or equivalent material, often referred to as abottle, and including a bulbous head, a neck and a nipple connected withthe outer end of said neck through the medium of a contracted orrestricted stem.

With the above and other objects in view this invention consists of thedetails of construction and combination of elements hereinafter setforth and then designated by the claims.

to make anduse the same Iwill describeitscon-' struction indetailreferring by numerals to'the accompanying drawing forming a parthereof,in which: I Fig. 1 is a side elevation. of a fire extinguisherconstructed in accordance with, my invention and showing thestrikerretracted andv held by a fusi-, blelink. g v;

Fig. 2 is a fragmentary similar view with one of the arms of the guidemember broken away'lto show the striker elevation.

Fig. 3. is 'a view similar to Fig". 2 showing the striker projected.forwardly as 'it is released'by melting of the fusible link.

Fig. "4 is a. section of .theframeon the 'lirie 4-4 of Fig; 1.; a

In carrying'out my invention as hereinembodied iii represents theupright or back plate having one 'or' more holes I l for thereception-or, fastening. devices I 2, such as screws. to secure theapparatusfto a wall or other convenient supporti To the back plate 19,adjacent its upper .endis" they are fastened together to constitute legsl5' and the terminals are bent outwardly to form toes [6 which are fixedto the front face of the" back plate, as by welding or brazing,

A guide member I! is produced from fiat strip material and fashioned toprovide a loo l8, ,a. pair of parallel arms IS with inturned toesv 2i),v

the inner ends of which meet and are secured to the front face of theback plate adjacent the lower end of the latter. A post 2| is carried,by the portions of the guide member I! and-,rn'ay be fastened theretoafter said guide member has been assembled on the back plate although,by

preference, said'pos't is mounted on the guide member prior to thelatter being fastened to the back plate. In other words, the guidemember I! and post 2! may be first assembled as a unit and subsequentlymounted on theback plate and said post is within the space between thearms. When the parts thus far described are assembled they constitutethe frame of the apparatus and the hoop and loop are homocentric withthe hoop in a plane spaced above the loop.

About the post 2! is a coil spring 22, of appreciable strength, with itsinner end engaging the toe portions 20 of the guide member ll. On theouter end of said spring 22 is mounted the striker 23 which includes abody 24 having a bore 25 running from the rear end to a location shortof the forward end and functioning as a socket for the outer end of thespring. The forward end of the striker is fashioned into a pointed ortapered head 26 and has a pin 21 projecting from the circumferencethereof which pin is preferably on the lower part of the striker,considered with relation to the assembled position, and projectsslightly forwardly to form a good bight.

A hook 28 or equivalent attaching means is carried by the back plate inline with the pin 21 and the sections 29, 30 of a fusible link 3! areengaged with said hook and pin when the striker is retracted to retainsaid striker in the retracted position and the spring 22 contractedunder normal conditions.

The frangible container 32 or bottle generally is of glass and includesa bulbous head 33, a depending neck 34, a restricted stem 35 and agenerally inverted cone shaped nipple 36. This container is looselyseated in the container supporting hoop with the neck projecting throughthe loop of the guide member so that a portion of said neck will be inthe path of travel of the striker.

In practice, the striker is retracted against the tension of the springand fastened in such position by engagement of opposite ends of thefusible link with the hook 28 and pin 27. The container with a fireextinguishing fluid is then mounted in the frame as above set forth. Thestriker will remain in the retracted position until such time as thefusible link is melted by excessive heat, usually due to a nearbyfire.Upon melting of the fusible link, the'striker will be released andpropelled'forwardly with sufficient force, supplied by the spring, tocause said striker to break the neck of the frangible container in amanner somewhat like that illustrated in'Fig. 3 wherein thesections ofthe fusible link areshown pulled apart and one section depicted asfalling, along with'a fragment 34a of 'the container neck.

From the foregoing it will be apparent that I haveproduced anexceedingly efficient apparatus will perform a straight direct blow forinsuring a sufficiently large opening inthe container to accomplish thedesired results and this is -made more positive by the pointed head onthe striker.

Should it become necessary to use the eX tinguisher manually, thecontainer can be lifted from the frame and thrown into a fire or thenipple struck upon some hard object to break it off leaving a relativelysmall end opening in the restricted stem so that the contents may bedirected onto a fire after the manner of a nozzle. 4

Of course I .do not wish to be limited to the exact details ofconstruction herein shown and described as these may be varied withinthe scope of the appended claims without departing from the spirit of myinvention.

Having described my invention what I claim as new and useful is:

1. In a fire extinguisher, a back plate to be suspended from a suitablesurface, a guide member comprising a loop and a pair of spaced parallelarms terminating in inturned toes secured to the back plate adjacent thelower end thereof, a post secured to the toe portions of the guidemember and projecting forwardly towards the loop between the arms, astriker comprised of a socketed body and a pointed head, a coil springhaving the forward end in the striker socket and surrounding the postwith the rear end in engagement with the toe portions of the guidemember, means including a fusible link to normally maintain the strikerin a retracted position and the spring under compression, and a hoopsecured to the back plate adjacent the upper end thereof and adapted tosupport a frangible container having a portion extending into the loopof the guide member to be in the path of forward projection of thestriker upon release of the latter.

2. A fire extinguisher comprising a back plate to be suspended in avertical position, a horizontal post projecting from said back plate atright angles thereto, a striker including a socketed body and a solidhead, the socketed body 0f said striker telescoped overthepost, a coilspring mounted in the socketed body and surrounding said post betweenthe back plate and striker head to urge the striker forwardly away fromsaid back plate, a fusible link subject to the action of heat attachedto hooks on the backplate and striker to normally maintain the latter ina retracted position, a guide member secured to the back platev andcomprising'a pair of armspartially housing the striker and-a loop beyondthe forward end of said striker While the latter is retracted, and-acontainer supporting hoop secured to said back plate adjacent-the upperendthereof and adapted to support 'a-b' 'ilbous frangible containerhaving a reduced neck projecting into the guide loop to be struckon theside by the'striker when thelatter isreleased.

REFERENCES Cir En The following references are of record'th'e file ofthis patent: l

UN ITE D STATES PATENTS Number HARRY J. soHNoRRfi

